wl1271: Remove unnecessary rx_descriptor memory allocation

Remove unnecessary RX descriptor memory allocation from the driver. The
allocation was a remnant of the wl1251 driver.

Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Reviewed-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/wl12xx/wl1271.h

@@ -429,7 +429,6 @@ struct wl1271 {
 	u32 buffer_32;
 	u32 buffer_cmd;
 	u32 buffer_busyword[WL1271_BUSY_WORD_CNT];
-	struct wl1271_rx_descriptor *rx_descriptor;
 
 	struct wl1271_fw_status *fw_status;
 	struct wl1271_tx_hw_res_if *tx_res_if;

drivers/net/wireless/wl12xx/wl1271_main.c

@@ -1893,13 +1893,6 @@ static int __devinit wl1271_probe(struct spi_device *spi)
 	wl->state = WL1271_STATE_OFF;
 	mutex_init(&wl->mutex);
 
-	wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
-	if (!wl->rx_descriptor) {
-		wl1271_error("could not allocate memory for rx descriptor");
-		ret = -ENOMEM;
-		goto out_free;
-	}
-
 	/* This is the only SPI value that we need to set here, the rest
 	 * comes from the board-peripherals file */
 	spi->bits_per_word = 32;
@@ -1965,9 +1958,6 @@ static int __devinit wl1271_probe(struct spi_device *spi)
 	free_irq(wl->irq, wl);
 
  out_free:
-	kfree(wl->rx_descriptor);
-	wl->rx_descriptor = NULL;
-
 	ieee80211_free_hw(hw);
 
 	return ret;
@@ -1988,9 +1978,6 @@ static int __devexit wl1271_remove(struct spi_device *spi)
 	kfree(wl->nvs);
 	wl->nvs = NULL;
 
-	kfree(wl->rx_descriptor);
-	wl->rx_descriptor = NULL;
-
 	kfree(wl->fw_status);
 	kfree(wl->tx_res_if);